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4.5 "PASS" or "FAIL" Determination
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4.5.3 "FAIL" State
WARNING
Even when a test has been terminated, there may still be voltage in the
output-voltage terminal. Before touching the output-voltage terminal,
H.V. TEST LEAD, or tested object, make sure that no high voltage is
being applied to the output, confirm the following items.
(1) The analog voltmeter reads 0 kV.
(2) The
DANGER
lamp is OFF.
(3) The
READY
lamp is lit (it is off in the Double Action mode).
UPPER FAIL
The measured resistance has exceeded the upper-
limit value.
LOWER FAIL
The measured resistance has dropped below the
lower-limit value.
When the preset test time has elapsed, the unit switches to the FAIL state
and immediately stops outputting a voltage if the measured resistance value
deviates from the upper or lower-limit value during the test.
The FAIL state can be divided into UPPER FAIL and LOWER FAIL states.
If the output voltage doesn't reach a level between 5% lower and 50% higher
than the set test voltage value, screening will not be performed.
If the test time has elapsed without the output voltage reaching a level
between 5% lower and 50% higher than the set test voltage value or if the
voltage deviates largely from the set voltage value, FAIL will result.
UPPER
,
LOWER
or
FAIL
will light.
(When the upper-limit value is set to OFF, UPPER FAIL is ineffective.)
If the test time has not been set, PASS screening is not performed. To the
test, press the
STOP
key, which will forcibly terminate the test.
Optional Functions
The FAIL state is held using the FAIL Hold function. (See Section 7.2)
If the test time is set, the test can be forcibly terminated when the
measured resistance value enters the PASS range before the preset time
has elapsed. This is convenient when testing objects that contains capacity
loads. (See Section 7.11)
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